romney who rallied yesterday in florida is preparing for the next debate. romney will hold a debate victory rally this evening. >>> september proved to be a lucrative month for the president's re-election campaign. democrats raised $181 million. that's at that record. and in the last month of the campaign that cash could prove crucial especially for ad buys in toss up states. >>> thousands of criminal cases are now in jeopardy and some people say they may have been wrongfully convicted because of a scandal uncovered in boston. how could it happen? >>> boston's legal system faces a potential nightmare. thousands of cases dating back nearly a decade could be gentlemen par di jeopardized by a lab worker that the afternoonered with evidence. >> it was refreshing because i didn't think it was real. >> reporter: it was real until last week, miss johnson was doing about three years in prison on a drug conviction, then she was suddenly set free. >> what is it like to be out of prison? >> freedom. yeah. i can breathe. >> reporter: free because of the bizarre alleged